ExecList
From NexusWiki
ExecList (list, condition);
It evaluates the term for all of the list’s elements. This usually means the execution of the commands, but it can mean something else too, e.g. summarizing. E.g.: ExecList(1, Explode_listobject()) all objects that are in the list will explode, sum=0; ExecList(1, set(sum, sum+S.energy)) it sums the energy of the list’s objects into a variable called sum.